Bookcase/display - first "big" project

This is a simple bookcase based on a design in Stamberg’s Instant Furniture
The original design called for 1×10 pine all cut to 48 1/2 inch length. My wife asked me to build this for a gift-shop she runs as a combination bookcase/store window display. I think she intends to have the side with the backing panels (1st picture) facing into the store. Those panels have some cool spalting on the boards towards the middle. The nails I used on the butt joints were a little long so I had some blow-out on a few shelves (or maybe I just did not aim the nailgun so well…). It took me way to long to realize I could grind the nails flush with the wood with a Dremel.

Wood is mixed white/red oak from eutree . Finish is oil/varnish with BLO and urethane- 7 coats.

I have a matching tapestry rack of my own design which is all cut, just need to figure out how to clamp it for assembly. Will post additional picks once it is installed in its new home in a week or two (after the finish cures).